1: Observe - we are hearing Snout's presentation for the main defence (3,4)
5: Redesign it about Elle. (7)
9: Feeling threatened, suggested concealing identity (11)
10: Clown with a tail. (3)
11: Four tight ends holding a private conversation (4-1-4)
14: The pole will carry the principal mainsail (5)
16: Perpendicular to 25-across? (5)
18: Stops trains and big trucks (7)
19: Whirling eel in enclosure (7)
20: Scrooge in film is erratic (5)
21: Theme eradicated partly by an eastern ruler (5)
22: Caribbean tourists love to do this as dolphin cavorts (6-3)
24: Neither's partner participated in an orchestra (3)
25: Check strong drink of 22-acrosss bold alter ego (5,6)
28: Woody is to eviscerate Human Resources, that is (7)
29: Liberate some tennis without charge (3,4)